Article
Chemistry, Physical
Ming-Sheng Xie, Ning Li, Yin Tian, Xiao-Xia Wu, Yun Deng, Gui-Rong Qu, Hai-Ming Guo
Summary: A study reported the use of bifunctional chiral PPY N-oxides as catalysts for dynamic kinetic resolution of racemic carboxylic esters, achieving high yields and enantioselectivity for the synthesis of chiral alpha-aryl alpha-alkyl carboxylic esters. Mechanistic studies revealed the crucial role of oxygen atoms in PPY N-oxides during the reaction process.
Article
Chemistry, Multidisciplinary
Zhi-Zhou Pan, Jia-Heng Li, Hu Tian, Liang Yin
Summary: A copper(I)-catalyzed asymmetric allylation of ketones with 2-aza-1,4-dienes has been demonstrated, providing a series of functionalized homoallyl tertiary alcohols with high to excellent enantioselectivity. The deprotonation of N-allyl-1,1-diphenylmethanimines is the rate-determining step in the reaction, generating nucleophilic allyl copper(I) species. The utility of this method has been demonstrated by the asymmetric synthesis of (R)-boivinianin A and (R)-gossonorol.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Qiao Zhang, Hsin Jung Tsai, Fuhua Li, Zhiming Wei, Qinye He, Jie Ding, Yuhang Liu, Zih-Yi Lin, Xiaoju Yang, Zhaoyang Chen, Fangxin Hu, Xuan Yang, Qing Tang, Hong Bin Yang, Sung-Fu Hung, Yueming Zhai
Summary: In this study, a Fe-P atom paired catalyst was constructed to accelerate the proton-coupled electron transfer (PCET) step and improve the catalytic activity of CO2-to-CO conversion. It was found that the P atom in the atom pair provided additional adsorption sites, accelerating water dissociation, boosting the hydrogenation of CO2, and enhancing the activity of CO2 reduction. This atom-pair catalytic strategy has the potential to overcome the inherent limitations of single-atom catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Lu Yang, Nuan Song, Daopeng Zhang, Suna Wang, Zhen Zhou
Summary: Accurate matching of active sites is crucial for the selective recognition and binding abilities of molecules. A metal-organic cage with secondary amino groups was designed, which exhibited selective recognition of different nucleosides. Additionally, accurate matching enabled the cage to strongly bind an organic dye, facilitating photoinduced electron transfer.
INORGANIC CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Parth Patel, Unnati Patel, Bhavesh Parmar, Abhishek Dadhania, Eringathodi Suresh
Summary: Developing a novel heterogeneous catalyst for regioselective ring-opening reactions of spiro-epoxyoxindoles has significant importance in the pharmaceutical industry. In this study, a chiral-phase pure Zn-based metal-organic framework (MOF) was synthesized and shown to efficiently catalyze the formation of beta-alkoxy/beta-hydroxy alcohols. The catalyst exhibited excellent activity and stability, and the catalytic products were confirmed by single-crystal X-ray diffraction (SXRD) analysis.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Organic
Angel Ho, Austin Pounder, Samuel Koh, Matthew P. Macleod, Emily Carlson, William Tam
Summary: This study demonstrates the ability of carboxylic acid tethered CPOBD to undergo ring-opening reactions under mild acidic conditions, with high regioselectivity towards type 3 ring-opened products. Substitution at specific positions of CPOBD was found to hinder the ring-opening reactions and decrease the yields of ring-opened products. Overall, this work represents the first examples of acid-catalyzed intramolecular ring-opening reactions of CPOBD with carboxylic acid nucleophiles.
SYNTHESIS-STUTTGART
(2022)
Article
Multidisciplinary Sciences
Ye Tian, Jiani Hong, Duanyun Cao, Sifan You, Yizhi Song, Bowei Cheng, Zhichang Wang, Dong Guan, Xinmeng Liu, Zhengpu Zhao, Xin-Zheng Li, Li-Mei Xu, Jing Guo, Ji Chen, En-Ge Wang, Ying Jiang
Summary: The nature of hydrated proton on solid surfaces has been visualized using cryogenic qPlus-based atomic force microscopy. Eigen cations self-assemble into monolayer structures with local order, while Zundel cations form long-range ordered structures stabilized by nuclear quantum effects. It is found that Zundel configuration is preferred over Eigen on Pt(111), but such preference is absent on Au(111).
Article
Chemistry, Multidisciplinary
Kai Wang, Ziye Liu, Guangyang Xu, Ying Shao, Shengbiao Tang, Ping Chen, Xinhao Zhang, Jiangtao Sun
Summary: Asymmetric carbene insertion reactions are crucial for constructing carbon-heteroatom bonds, but high enantioselectivity typically requires the use of donor-acceptor diazo compounds with an ester group. This study presents the first chemo and enantioselective formal N-H insertion of 2-pyridones using enynones as donor-donor carbene precursors, with DFT calculations revealing an unprecedented enantioselective 1,4-proton transfer from O to C. The rhodium catalyst's chiral pocket, along with steric repulsion and pi-pi interactions of the propeller ligand, play essential roles in determining the selectivities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Xingming Ning, Peiyao Du, Zhengang Han, Jing Chen, Xiaoquan Lu
Summary: By studying the BiVO4/iron-nickel hydroxide composite, it was found that the iron-nickel hydroxide acts as a charge transporter rather than a sole electrocatalyst. The enhancement of PEC performance is mainly attributed to the efficient suppression of charge recombination by fast hole transfer kinetics at the BVO/FxN4-x-H interface.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Bo-Hong Luo, Ya-Jie Ren, Hai-Bin Cui, Qiang Fu, Hao-Dong Jiang, Huan-Fa Du, Qin Xie, Peng Li, Hua-Xin Zhang, Tian-Shun Wang
Summary: The aqua-coordinated oxo-bridged diruthenium(III) complex demonstrates electronic absorption properties, redox behavior, and catalytic capabilities for water oxidation reaction. The complex displays different visible absorption bands under different pH conditions and exhibits proton-coupled electron transfer behaviors at different pH values.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Inorganic & Nuclear
Xuhui Lin, Yirong Mo
Summary: The study confirmed the presence of the first intramolecular Au...H-O hydrogen bond in gold(I) complexes and identified it as a new type of resonance-assisted hydrogen bond. The research revealed the nature of this unique hydrogen bond and presented a novel theoretical perspective for the rational design of strong gold hydrogen bonds.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Martin Pfeiffer, Rory M. Crean, Catia Moreira, Antonietta Parracino, Gustav Oberdorfer, Lothar Brecker, Friedrich Hammerschmidt, Shina Caroline Lynn Kamerlin, Bernd Nidetzky
Summary: The cooperative interplay between functional devices in enzyme catalysis is important for understanding the efficiency of natural enzymes and enzyme design. This study investigates the functional interconnectedness of the catalytic nucleophile in an acid phosphatase and provides evidence for the cooperative interplay between nucleophilic and general-acid catalytic groups. The results show that the cooperative nature of enzymatic catalysis distinguishes it from the corresponding reaction in solution.
Article
Chemistry, Physical
Ming-Sheng Xie, Meng Shan, Ning Li, Yang-Guang Chen, Xiao-Bing Wang, Xuan Cheng, Yin Tian, Xiao-Xia Wu, Yun Deng, Gui-Rong Qu, Hai-Ming Guo
Summary: An efficient chiral 4-aryl-pyridine-N-oxide (ArPNO) nucleophilic organocatalyst was designed, synthesized, and successfully applied in the dynamic kinetic resolution of azoles, aldehydes, and anhydrides, providing high yields, excellent enantioselectivity, and structural diversity. Mechanistic studies revealed the key role of acyloxypyridinium cation formation and the higher nucleophilic ability of oxygen in pyridine-N-oxide, contributing to the development of diverse chiral 4-substituted pyridine-N-oxides as efficient nucleophilic organocatalysts.
Article
Chemistry, Organic
S. G. Bakhtin, E. N. Shved, M. A. Sinelnikova, Yu N. Bespalko
Summary: The behavior of tetraethylammonium salts in the nucleophilic opening of the oxirane ring of epichlorohydrin was studied, with the reaction order and mechanism elucidated based on monitoring of the accumulation of 4-nitrophenoxide ion. The anion X of the initial tetraethylammonium salt was irreversibly consumed in the reaction, resulting in the formation of tetraethylammonium 4-nitrophenoxide, which catalyzed the subsequent formation of the final product.
RUSSIAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
Todd P. Silverstein
Summary: This article surveys key aspects of the proton in chemistry and biochemistry, covering its structure in aqueous solution, effects on biological cells, and involvement in biochemical reactions. Additionally, it explores the impact of pH on biochemical thermodynamics and the Chemiosmotic Theory.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Bowen Qin, Xiaoying Zhang, Jingjing Qiu, Godefroid Gahungu, Haiyan Yuan, Jingping Zhang
Summary: A porous Zn-based MOF was designed and fabricated for selective detection of Fe3+, CrO42-, and Cr2O72- in aqueous solution with ultralow detection limits and the ability for multiple regenerations. Incorporating the compound into a mixed-matrix membrane (MMM) also showed quick detection and regeneration capabilities for the ions at a comparable low detection limit. This work presents a cost-effective and practical platform for sensing in aqueous solutions.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Fang Yuan, Zhifang Yang, Xiaoying Zhang, Cuiyan Tong, Godefroid Gahungu, Wenliang Li, Jingping Zhang
Summary: The study investigates the effects of functional groups on CO2 adsorption and separation in 3D covalent organic frameworks. The results show that functional groups play a key role in determining CO2 uptake at low pressure and pore size becomes crucial at high pressure. Functionalization can significantly enhance CO2 selectivity over other gases, with -SO3H being the most promising group for CO2 separation.
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2021)
Article
Chemistry, Organic
Yuting Qiu, Haiyan Yuan, Xiaoying Zhang, Jingping Zhang
Summary: Computational studies of CPA-catalyzed DyKAH reactions reveal a catalytic asymmetric model involving pi-allylic carbocationic intermediates, with high E/Z selectivity achieved through intermolecular proton transfer. Noncovalent interactions within the electrostatic environment created by the phosphoric acid are key to explaining the enantioselectivity, while the chiral SPINOL scaffolds control the signs of enantioselectivity through substrate binding pocket configurations. Overall, understanding these mechanisms is crucial for guiding DyKAH reactions.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Zhifang Yang, Wenliang Li, Jingping Zhang
Summary: This study explores high-capacity and efficient anode materials for rechargeable lithium-ion batteries. It is found that borophene and phosphorene can form stable heterojunctions with good conductivity. The theoretical capacity of these heterojunctions is high, and the average voltage is greatly reduced compared to bare phosphorene. Therefore, the B/P heterojunction shows great potential for application.
Article
Nanoscience & Nanotechnology
Yue-Ming Li, Wen-Hao Li, Wan-Yue Diao, Fang-Yu Tao, Xing-Long Wu, Xiao-Ying Zhang, Jing-Ping Zhang
Summary: The modification of zinc anodes using a ball-milling clay precipitate to create a three-dimensional framework on the surface of the zinc foil improves the stability and performance of zinc-ion batteries. It relieves the stress caused by volume change and ensures uniform ion flux, leading to a stable long cycle and inhibition of side reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Fang-Yu Tao, Xiao-Ying Zhang, Dan Xie, Wan-Yue Diao, Chang Liu, Hai-Zhu Sun, Xing-Long Wu, Wen-Liang Li, Jing-Ping Zhang
Summary: This study presents a method to spatially confine lithium deposition using lithiophilic honeycomb-like layered double hydroxide nanosheet arrays, which effectively inhibits the dendritic lithium growth and volume change. The resulting symmetric cell exhibits low overpotential and a long lifespan, suggesting the great potential of this material for stabilizing lithium metal anodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yang Su, Yan-Fei Li, Shen-Gen Gong, Yi-Han Song, Bing Li, Xing-Long Wu, Jing-Ping Zhang, Dong-Tao Liu, Chang-Lu Shao, Hai-Zhu Sun
Summary: According to the study, the design and synthesis of a heteroatom co-doped composite TiO2@MoSe2/RGO can improve the electrochemical performance and cycling stability of sodium-ion storage devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Rui Jiao, Yan-Fei Li, Guo-Duo Yang, Wen-Chen Wang, Lei Ding, Jian Lin, Yi-Han Song, Jia-Yu Zhang, Xing-Long Wu, Jing-Ping Zhang, Ming-Xiao Deng, Hai-Zhu Sun
Summary: Synthesizing alloy-type materials is an effective method to prevent lithium dendrites in Li metal anode due to their good lithiophilicity and easy electrochemical reaction with lithium. However, previous studies have neglected the alloying reaction process between Li+ and X. In this work, a novel approach involving the alloy reaction between Li+ and Zn is developed to inhibit lithium dendrites more effectively. A three-dimensional substrate material loaded with metallic Zn on the surface of Cu foam is synthesized, enabling a more uniform Li nucleation and growth. The full cell demonstrates a reversible capacity of 122.5 mAh g(-1) and a high capacity retention of 95% after 180 cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Jian Lin, Yanfei Li, Yihan Song, Jingping Zhang, Haiming Xie, Haizhu Sun
Summary: The inner-outer dual space protection of MoS2 fibers is achieved by regulating the surface and interface structure of electrospinning precursors. This work provides a new idea for the preparation of stable anodes for alkali metal ion secondary batteries, with a decent cycling performance and satisfying rate capacities.
Article
Chemistry, Multidisciplinary
Wan-Yue Diao, Dan Xie, Yuan Sang, Fang-Yu Tao, Chang Liu, Hai-Zhu Sun, Wen-Liang Li, Xing-Long Wu, Jing-Ping Zhang
Summary: In this study, a liquid-dynamic and self-adaptive protective layer is constructed on the Zn metal surface to improve the reversibility and stability. The outer layer consists of liquid PFPE, which can adapt volume change and inhibit side reactions. The inner layer is composed of in-situ formed ZnF2, which accelerates ion transfer and restricts dendrite formation.
Article
Chemistry, Multidisciplinary
Chang Liu, Wen-Bin Jiang, Dan Xie, Wan-Yue Diao, Fang-Yu Tao, Xin-Zhe Wang, Hai-Zhu Sun, Wen-Liang Li, Xing-Long Wu, Jing-Ping Zhang
Summary: Reconstructing the inner Helmholtz layer (IHL) by introducing an electrolyte additive is a promising strategy to obtain stable Zn metal anodes in aqueous zinc ion batteries (AZIBs). The addition of (4-chloro-3-nitrophenyl) (pyridin-4-yl) methanone (CNPM) to the ZnSO4 electrolyte reshapes the Zn metal anode/electrolyte interface and changes the solvation structure of Zn2+. The CNPM adsorbs on the Zn anode surface and serves as zincophilic sites, leading to uniform Zn deposition along the (002) plane and suppressing dendrite growth and parasitic reactions.
Article
Chemistry, Multidisciplinary
Jiangyan Dang, Jingjing Qiu, Xiaoying Zhang, Ruifa Jin, Bowen Qin, Jingping Zhang
Summary: A series of mixed NiCoFe-MOFs with low crystallinity were successfully synthesized as direct electrocatalysts for the oxygen evolution reaction. The flower-like nanocatalyst NiCoFe-MOF-2 exhibited a hierarchical pore network, large specific surface area, adjustable electronic structure, effective mass transfer, and abundant exposed active sites, resulting in excellent electrocatalytic OER performance.
Article
Chemistry, Organic
Manzhu Zhao, Haiyan Yuan, Jingping Zhang
Summary: Computational studies revealed that the Pd-II-π-allyl coordinated mechanism is the most preferred pathway in the Pd-catalyzed regiodivergent coupling reaction of indazoles and isoprene. The regioselectivity of 1,2-insertion is influenced by the noncovalent interactions between the less bulky ligand L1, substrates, and (PhO)2PO2-. On the other hand, the regioselectivity of 4,3-insertion is primarily controlled by the steric repulsion of the t-Bu group of the bulky ligand L2 and substrate, as well as the geometry distortion. Similarly, the nucleophilic site selectivity at N-1 or N-2 of indazoles is determined by the cooperative effect of acid BF3 and solvent (PrOH)-Pr-i.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Danhong Wang, Zhifang Yang, Wenliang Li, Jingping Zhang
Summary: Two-dimensional materials have gained attention in metal-ion batteries due to their high specific surface area, abundant active sites, and good electronic properties. In this study, a new 2D B3S2 monolayer with high stability is designed based on first-principles calculations. The B3S2 monolayer exhibits metallic nature, low diffusion energy barrier, and high theoretical capacity as an anode material for sodium-ion batteries, making it a promising candidate in the field.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Bowen Qin, Xiaoying Zhang, Jiangyan Dang, Dan Yue, Bing Zhang, Weidong Li, Godefroid Gahungu, Zhenling Wang, Jingping Zhang
Summary: A 3D luminescent Zn-MOF with a pillared-layer structure was synthesized in this study. This compound showed promising applications in ion sensing and white-light emission.
